A migraine without an aura. This is the most frequent type of migraine, accounting for about 80 to 85 percent of migraines.

An aura is a sensation that is perceived by a patient which precedes a condition affecting the brain.

An aura often occurs before a migraine or seizure. It may consist of flashing lights, a gleam of light, blurred vision, an odor, the feeling of a breeze, numbness, weakness, or difficulty in speaking.